Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations
Previous studies of migratory sandhill cranes (Grus Canadensis) have made significant progress explaining evolution of this group at the species scale, but have been unsuccessful in explaining the geographically partitioned variation in morphology seen on the population scale. The objectives of this...
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2005
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ftunivnebraskali:oai:digitalcommons.unl.edu:usgsnpwrc-1059 2023-11-12T04:11:53+01:00 Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations Jones, Kenneth L. Krapu, Gary L. Brandt, David A. Ashley, Mary V. 2005-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/usgsnpwrc/55 https://digitalcommons.unl.edu/context/usgsnpwrc/article/1059/viewcontent/Krapu_ME_2005_Population_genetic.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usgsnpwrc/55 https://digitalcommons.unl.edu/context/usgsnpwrc/article/1059/viewcontent/Krapu_ME_2005_Population_genetic.pdf USGS Northern Prairie Wildlife Research Center Other International and Area Studies text 2005 ftunivnebraskali 2023-10-30T10:34:37Z Previous studies of migratory sandhill cranes (Grus Canadensis) have made significant progress explaining evolution of this group at the species scale, but have been unsuccessful in explaining the geographically partitioned variation in morphology seen on the population scale. The objectives of this study were to assess the population structure and gene flow patterns among migratory sandhill cranes using microsatellite DNA genotypes and mitochondrial DNA haplotypes of a large sample of individuals across three populations. In particular, we were interested in evaluating the roles of Pleistocene glaciation events and postglaciation gene flow in shaping the present-day population structure. Our results indicate substantial gene flow across regions of the Midcontinental population that are geographically adjacent, suggesting that gene flow for most of the region follows an isolation by- distance model. Male-mediated gene flow and strong female philopatry may explain the differing patterns of nuclear and mitochondrial variation. Taken in context with precise geographical information on breeding locations, the morphologic and microsatellite DNA variation shows a gradation from the Arctic-nesting subspecies G. c. canadensis to the non- Arctic subspecies G. c. tabida. Analogous to other Arctic-nesting birds, it is probable that the population structure seen in Midcontinental sandhill cranes reflects the result of postglacial secondary contact. Our data suggest that subspecies of migratory sandhills experience significant gene flow and therefore do not represent distinct and independent genetic entities. Text Arctic University of Nebraska-Lincoln: DigitalCommons@UNL Arctic |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
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ftunivnebraskali |
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Other International and Area Studies |
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Other International and Area Studies Jones, Kenneth L. Krapu, Gary L. Brandt, David A. Ashley, Mary V. Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations |
topic_facet |
Other International and Area Studies |
description |
Previous studies of migratory sandhill cranes (Grus Canadensis) have made significant progress explaining evolution of this group at the species scale, but have been unsuccessful in explaining the geographically partitioned variation in morphology seen on the population scale. The objectives of this study were to assess the population structure and gene flow patterns among migratory sandhill cranes using microsatellite DNA genotypes and mitochondrial DNA haplotypes of a large sample of individuals across three populations. In particular, we were interested in evaluating the roles of Pleistocene glaciation events and postglaciation gene flow in shaping the present-day population structure. Our results indicate substantial gene flow across regions of the Midcontinental population that are geographically adjacent, suggesting that gene flow for most of the region follows an isolation by- distance model. Male-mediated gene flow and strong female philopatry may explain the differing patterns of nuclear and mitochondrial variation. Taken in context with precise geographical information on breeding locations, the morphologic and microsatellite DNA variation shows a gradation from the Arctic-nesting subspecies G. c. canadensis to the non- Arctic subspecies G. c. tabida. Analogous to other Arctic-nesting birds, it is probable that the population structure seen in Midcontinental sandhill cranes reflects the result of postglacial secondary contact. Our data suggest that subspecies of migratory sandhills experience significant gene flow and therefore do not represent distinct and independent genetic entities. |
format |
Text |
author |
Jones, Kenneth L. Krapu, Gary L. Brandt, David A. Ashley, Mary V. |
author_facet |
Jones, Kenneth L. Krapu, Gary L. Brandt, David A. Ashley, Mary V. |
author_sort |
Jones, Kenneth L. |
title |
Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations |
title_short |
Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations |
title_full |
Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations |
title_fullStr |
Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations |
title_full_unstemmed |
Population Genetic Structure in Migratory Sandhill Cranes and the Role of Pleistocene Glaciations |
title_sort |
population genetic structure in migratory sandhill cranes and the role of pleistocene glaciations |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2005 |
url |
https://digitalcommons.unl.edu/usgsnpwrc/55 https://digitalcommons.unl.edu/context/usgsnpwrc/article/1059/viewcontent/Krapu_ME_2005_Population_genetic.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
USGS Northern Prairie Wildlife Research Center |
op_relation |
https://digitalcommons.unl.edu/usgsnpwrc/55 https://digitalcommons.unl.edu/context/usgsnpwrc/article/1059/viewcontent/Krapu_ME_2005_Population_genetic.pdf |
_version_ |
1782330751343132672 |